import { login, logout, getInfo, updateMe } from '@/api/user'
import { getToken, setToken, removeToken } from '@/utils/auth'
import router, { resetRouter } from '@/router'

const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    roles: [],
    menu: [],
    introduction: [],
    stores: [],
    storesNames: []
  }
}

const state = getDefaultState()

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles
  },
  SET_MENU: (state, menu) => {
    state.menu = menu
  },
  SET_INTRODUCTION: (state, introduction) => {
    state.introduction = introduction
  },
  SET_STORES: (state, stores) => {
    state.stores = stores
  },
  SET_STORES_NAMES: (state, storesNames) => {
    state.storesNames = storesNames
  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { username, password } = userInfo
    return new Promise((resolve, reject) => {
      login({ username: username.trim(), password: password }).then(response => {
        const { data } = response
        commit('SET_TOKEN', data.access_token)
        setToken(data.access_token)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const { data } = response
        if (!data) {
          return reject('验证失败，请重新登录')
        }

        const { username, introduction, roles, menu, stores, stores_names } = data
        // roles must be a non-empty array
        if (!introduction || introduction.length <= 0) {
          reject('当前用户未绑定角色')
        }

        commit('SET_NAME', username)
        commit('SET_ROLES', roles)// 指令权限集
        commit('SET_MENU', menu)// 菜单目录集
        commit('SET_INTRODUCTION', introduction)// 角色名称集
        commit('SET_STORES', stores)// 门店id集
        commit('SET_STORES_NAMES', stores_names)// 门店名称集
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state, dispatch }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        commit('SET_TOKEN', '')
        commit('SET_ROLES', [])
        removeToken()
        resetRouter()
        // reset visited views and cached views
        // to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
        dispatch('tagsView/delAllViews', null, { root: true })
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      commit('SET_TOKEN', '')
      commit('SET_ROLES', [])
      removeToken() // must remove  token  first
      resolve()
    })
  },

  updateMe({ commit, state }, data) {
    return new Promise((resolve, reject) => {
      updateMe(data).then(response => {
        const { data } = response
        if (!data) {
          reject('验证失败，请重新登录')
        }
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },
  // dynamically modify permissions
  async changeRoles({ commit, dispatch }, role) {
    const token = role + '-token'
    commit('SET_TOKEN', token)
    setToken(token)
    const { roles } = await dispatch('getInfo')
    resetRouter()
    // generate accessible routes map based on roles
    const accessRoutes = await dispatch('permission/generateRoutes', roles, { root: true })
    // dynamically add accessible routes
    router.addRoutes(accessRoutes)
    // reset visited views and cached views
    dispatch('tagsView/delAllViews', null, { root: true })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

